Match the words with their definitions.

• Объекты 1
  • a person who does services without payment or reward
  • things of no use that are thrown away
  • to make free from dirt and rubbish
  • the relation of plants and living beings to each other and to the environment
  • to treat smth that has already been used so that it is fit to use again
  • a box for birds to nest in
• Объекты 2
  • a volunteer
  • rubbish
  • to clean out
  • ecology
  • to recycle
  • a nesting box